Leveling device for clocks and similar instruments.



PATENTED JUNE 26, 1906.

0. L. BONNEY. LBVELING DEVICE FOR CLOCKS AND SIMILAR INSTRUMENTS.

APPLICATION FILED SEPT. 5. 1905.

2 SHEETS-SHEET 1.

No. 824,525. PATENTED JUNE 26, 1906. 0. L. BONNEY. LEVELING DEVICE FORCLOCKS AND SIMILAR INSTRUMENTS.

APPLICATION FILED SEPT. 5. 1905.

2 SHEETSSHEBT 2.

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UNITED STATES PATENT OFFICE.

OSCAR L. BONNEY, OF DENVER, COLORADO.

Specification of Letters Patent.

Patented. June 26, 1906.

Application filed September 5. 1905. Serial ITO-276,935.

To all whom it may concern.-

Be it known that I, OSCAR L. BONNEY, a

' citizen of the United States, residing in the city and county ofDenver and State of Colorado, have invented certain new and useful andto the figures of reference marked thereon, which form a part of thisspecification.

My invention relates to improvements in leveling devices for clocks orsimilar instruments.

It is well known that most clocks will not run unless they are properlyleveled or so adjusted that they stand in a horizontal or approximatelyhorizontal position. Great difficulty is often experienced in adjustingclocks on this account, since under ordinary circumstances no means areat hand to guide the operator in his work.

The object of my invention is to overcome this difficulty, and to thisend a leveling device of special construction is applied to each cornerof the base of the clock or to each corner of a false base up on whichthe clock rests. This leveling device consists of a bolt adapted torotate in a nut embedded in the clock or base, a keybeing connected torotate with the bolt and slidable longitudinally thereon. The key isapplied to the upper protruding extremity of the bolt, while the lowerextremity of the latter is embedded in rubber or other suitable materialadapted to prevent the bolt from marring the shelf or other support uponwhich the clock stands. The clock or base, as the case may be, isprovided with two spirit-level tubes located at one side and one end,respectively. By the use of these tubes and the adjustable bolts orscrews the clock may be quickly and easily leveled, as will be readilyunderstood.

Having briefly outlined my improved construction, as well as thefunction it is intended to perform, I will proceed to describe the samein detail, reference being made to the accompanying drawings, in whichis illustrated an embodiment thereof.

In the drawings, Figure 1 is a front elevation of one form of myimproved device with a clock in position thereon. Fig. 2 is a top planview of the same shown in detail. Fig.

3 is a section taken through one of the leveling-screws on the line 3 3,Fig. 2. Fig. 4 is a front elevation of a clock having the levelingdevlces applied directly to the base thereof.

Attention is called to the fact that the only d fference between theconstruction Sl1OWI1 lI1 Figs. 1 and 2 and that shown in Fig. 4 1s thatin Figs. 1 and 2 the clock-is removably connected with the base, whilein Fig. 4 the base to which the leveling devices are applled is part ofthe clock-frame.

The same reference characters indicate the same parts in all the views.

Beferring first more especially to Figs. 1 to 3, lnclus ve, let thenumeral 5 designate the base, which may be composed of any suitablematerial. This base will ordinarily be composed of wood and may bestained or otherwise prepared to match or harmonize with the main shelfor support upon which the base is to be placed. In each corner of thebase is embedded a nut 6. This nut is so connected with the base that itcannot turn in the opemng in which it is placed. To this end lt ispreferably provided with a thin pro- ]ect1on 7 on one side, which entersthe material, as wood, of the base and locks the nut against rotation.Threaded in this nut is a screw 8, which protrudes both above and belowthe base 5. The lower extremity of the screw is provided with a foot 9,composed of rubber or other suitable material, adapted to prevent thescrew from marring the support upon which the base stands. The screw, asshown in the drawings, is flattened on one side to receive a key 10,having a counterpart opening adapted to receive the upper protrudingextremity of the screw, which slides freely'therein. By virtue of thisconstruction the screw may be turned by rotating the key 10. Tofacilitate this adjustment, this key is preferably provided with amilled or knurled zone 12. Spirit-level tubes 13 and 14 are embedded inthe side and end respectively, of the base to aid the operatof' in theleveling operation. By virtue of these tubes he is able to accuratelyregulate the base or place it in a horizontal position.

From the foregoing description the use and operation of this. form of myimproved device will be readily understood. Assuming that the shelf isequipped with the leveling devices at the corners, as heretoforeexplained it is only necessary to place it upon the mairi shelf orsupport. Then by observing the spirit-level tubes the operator mayreadily screws in the manner heretofore explained.

As heretofore intimated, the form of construction shown inFig. 4, theleveling-tubes, and the adjusting-screws are applied directly to theclock-base, which is designated 5 in the drawings.

Having thus described my invention, what I claim is 1. The combinationwith the base of a clock or similar instrument, of a nut embedded in thebase in a manner to prevent rotation, a screw threaded in the nut andprotruding both above and below the base, and a key having an unthreadedopening, applied to the upper threaded extremity of the screw andslidable freely on the threaded portion thereof, but connected therewith'to cause the two parts to rotate in unison, the threaded portion of thescrew extending above the clock-base and the key bein located at alltimes entirely above the said ase.

2. The combination with the base of a clock or similar instrument, ofanut embedded in each corner of the base in a manner to preventrotation, a screw threaded in the nut and protruding both above andbelow the base, and a milled key having an unthreaded opening, appliedto the upper threaded extremity of the screw and slidable freely on thethreaded portion thereof, but connected therewith to cause the two partsto rotate in unison, the key of each screw being located at all timesentirely above the clock-base.

In testimony whereof I affix my signature in presence of two witnesses.

OSCAR L. BONNEY Witnesses:

A. J. OBRIEN, WM. I. MEAD.

